OpenAI launches GPT-5.5, its first fully retrained base model since GPT-4.5, targeting enterprise with agentic coding, computer use, and knowledge work ...

OpenAI's newest model matches GPT-5.4's speed while outperforming it on nearly every benchmark. It's rolling out to paid ChatGPT users today.

OpenAI is capping off a busy week of announcements with the release of GPT-5.5, its latest model upgrade for ChatGPT and Codex. The company calls its new model “a new class of intelligence for real ...

For OpenAI, research is a two-way street. GPT 5.5 is part of the foundation of the super app that the company aims to build ...

OpenAI says its latest model offers increased capabilities across a broad variety of categories.